Method of heel-seat fitting



' Jan. 1, 1929. 1,697,243

J. F. JONAS METHOD OF HEEL SEAT FITTING Filed July 7, 1925 2 Sheets-Sheet 1 Jan. 1, 1929.

J. F. JONAS METHOD OF HEEL SEAT FITTING Filed July '7, 1925 2 Sheets-Sheet 2 Patented Jan. I, 1929.

UNITED STATES PATENT OFFICE.

' JACOB F.JONAS, OF BELLEVUE, KENTUCKY, ASSIG'NOR T0 UNITED SHOE MACHINERY v COBPORATIOIL-OF PA'IERSON, NEW JERSEY, .A. CORPORATION NEW JERSEY.

METHOD or HEEL-SEAT FITTING.

Application filed July 7, 1925. Serial No. 42,088.

V Thisinventionrelates to the manufacture of shoes and is illustrated herein with reference to an improved method of heel-seat fittin 1%) fitting shoes for the attachment of wood heels, and some other heels having concave attaching surfaces, it is the usual practice, after a sole has been attached to a shoe, to trim off surplus stock from the periphery of the heel-seat of the sole by a beveling cut, thereby reducing the heel-seat portion of the sole to such an extent that it will be received within the cupped attaching surface of the heel so that the edge of the heel will bear snugly and neatly against the shoe upper. i This beveling of the sole also provides a convex heel-seat corresponding in general to the cupped attaching face of the heel to be attached, thus providing a condition conducive to the secure attachment of the heel.-

It is an object of the present invention to provide an improved method of, heel-seat fitting by which the labor and cost of the operation are reduced without sacrificing in any way the quality ot the work. With this ob ject in view, my novel method comprises the shaping of the heel-seat portion of a sole to a contour to fit withinthecup of the concave attaching surface of a heel and the subsequent beveling of the periphery thus formed at the heel-scat portion of the sole before the sole is attached to a shoe. Unattached soles may be handled very much. more cheaply and easily than can shoes with their soles attached, and the shaping and beveling operations can accordingly be performed much more quickly and correspondingly more cheaply than if,

performed by hand after the soles have been attached to the shoes and by much simpler and less expensive machinery than if performed by heel-seat fitting machines after the soles have been attached; When the heel seat fitting operation is to be performed in this manner upon unattached soles, the soles are cut in the first instance to a length shorter than that of the shoes. to which they are to be attached. Thus the stock Wasted may be reduced .to a minimum, almost none being trimmed off at the rear of the heel-seat of the sole. I This saving, as compared to the practice prior to this-invention, amounts to from one-half a size to one size, that is to say from one-sixth to one-third of an inch in the length of each sole.

After attachment of the soles which have nection with the accompanying drawings and pointed. out in the claims.

In. the drawings, Fig. 1 is a plan view of a cut sole with its heel-seat portion reduced to fit within the cupped attaching surface of a wood heel; Fig. 2 illustrates the chipremoved from the sole of Fig. 1

Fig. 3 illustrates the sole of Fig. 1 after the periphery of the heel-seat thereof has been beveled to give it a convex form ing to the cupped wood heel;

Fig. 4 is a perspective View of the rear portionv of the sole of Fig. 3;

correspondattaching surface of a Fig. 5 is a side elevation of a machine adapted to die out the heel-seat portions of soles to the form illustrated in Fig. 1;

Fig. 6 is a perspective View of the cutting die of the machine of Fig. 5 on a larger scale than Fig. 5.

Fig. 7 is a plan view of the cutting block and end gage of the machine of Fig. 5;

Fig. 8 is a side elevation of a skiving machine adapted to bevel the peripheries of the beet-seats of soles, as shown in Figs. 3 and 4'; Fig. 9 is a side elevation of the work-feedmg and guiding instrumentalities and the skiving knife of the machine of Fig. 8 on a larger. scale than Fig. 8;

Fig. 10 is a front elevation of the mechanism of Fig. 9 with a part of the feed wheel broken away;

Fig. 11 is a perspective view of the skiving knife of the machine of Fig. 8; and I Fig. 12 is a plan View of the work-guiding instrnmentalities and the ski'ving knife of Fig. 9.

In utilizing the novel method of this application in the manufacture of shoes, it is necessary first to form a reduced portion. as shown at 12 in Fig. 1. at the heel-seat of an unattached sole conforming in outline to but v a little smaller in area than the cupped heelof which the heel-seat portions of soles may.

seat of the wood or other similar heel to be attached to the shoe. This may be done, for example, by performing a dieing out operation upon the heel-seat of a cut sole 14,- reducing the heel-seat from the form shown by the dotted line at 16 in Fig. 1 of the accom-v panying drawings to the form shown by the solid line at 12. In this operation a chip of the form shown at 18 in Fig. 2 will be formed. It is to be noted that the cut sole chosen .for this operation should be shorter than the shoe to which it is to be attached, chip 18 thus being of an insignificant width at the rear, as shown at 20, instead of being as Wide at the rear as it is at the sides or even wider as it would be if the sole were of the full length of the shoe. This reducing of the heel-seat portion of the sole may conveniently be performedby a die 22, such as is shown in Fig. 6, operated, for example, by a press, as shown-in Fig. 5, provided with a cutting block 24 and an adjustable end gage 26, as shown in Fig. 7

After the seel-seat portion of the sole has been reduced to an area a little less than that of the cupped attaching surface of the heel subsequently to be attached, the peripherv thus formed at the heel-seat is beveled,

as shown at 28 in Figs. 3 and 4,-so as to produce' a convex surface'which will fit snugly within the cupped attaching surface of the heel. This beveling may conveniently be done by a skiving machine such as that illustrated in Figs. 8 to 12, this machine being of the general nature described in United States Letters Patent No. 966,561, granted August 9, 1910, to George J. Kilb and Theobald Ringenbach, butchanged in several respects so as better to adapt it for the present pur o-se. a p After the' sole has-been beveled and thus brought to the form of Figs. 3 and 4, it is attached to the shoe in a known manner. Thus the illustrated sole is shown as having been channeled and grooved at 30,Fig. 4, prior to performance of the operations already described, so that it may be sewed 'to a lasted shoe upper and insole by, for example, the well known McKay stitcher.

When the. shoe isready for the attachment of the wood or other heel, the operator applies the heel to the heel-seat portion of the shoe, ascertaining whether it is necessary to remove. any additional stock from the sole adjacent to the heel-breast corners. Such additional stock is'quickly and easily removed with a knife and the heel is then attached to the. shoe in the usual fashion.

The machine of Figs. 5, 6 and 7, by means conveniently be reduced as shown at 12 in Fig. 1, consists of a press having a frame 40, a cutting-block 24 secured to the frame, for example by an adjusting screw 42, and a reciprocable plunger 44. A treadle 46 is connected by a link 48 with toggle mechanism comprising a bell-crank lever 50 fulcrumed at 52 toplunger 44 and pivoted at 54 to a link 56 pivoted at- 58 to the upper part of frame 40. It will thus be seen that by the depression of treadle 46 plunger 44 is moved downwardly forcing (lie v22, which may be removably secured to the lower end of plunger 44, through the work piece placed upon the cutting block 24. A spring 60 moves plunger 44 and die22 upwardly away from cutting block 24 when treadle 46 is released. Die as more clearly shown in Fig. 6, has a cutting edge 62 which is of a general U-shaped form with a pair of transverse cutting edges 64 extending in opposite directions at the open end of the U. A number of different dies of different sizes will naturally be used to operate upon soles whichare to be used in shoes havmg d fferent sizes and shapes of heels. For convenience in operating upon soles of d1fier- V ent sizes. the back gage 26 is attached to cutting block 24 by screw and slot connections 66 (Fig. 7), gage 26 being adjusted rearwardly or forwardly as the case may be to bring the rear end of the sole to be operated li pflll into proper relation to the rear of the c is.

The beveling of the reduced heel-seat porions of the soles may conveniently be per- .formed by the maehineofFigs. 8 to 12.

This machine comprises a frame 70 provided with suitable bearings for a shaft 7 2 driven' from any suitable source of power and carrying upon its left-hand end, as viewed in Fig. 8, a feed wheel 74 illustrated on a'larger scale also in Fig. 9. This feed wheel is toothed, as illustrated at 75, so as to ensure proper feed of the work while permitting at the same time axial movement of the work about substantially the point of contact of the feedwheel with thework. Mounted for vertical sliding movement in frame 70 is a work table 76'pressed upwardly by a spring 78 and arranged to be depressed by a treadle SO.

Adjustably clamped to table 76 is a knife 82 Fig. 9) of the center of rotation of feed wheel 74. ,To facilitate the feeding of the work a pair of rolls- 88, 89 are provided journaled in a plate 90 adjustably secured to work table 76 by a screw and slot connection 91. As the work is fed, one or both of these rolls will serve as an edge gage, thus assisting the operator to guide the work as it is beveled.

A guard plate 92is also secured to the work table 76, this plate having an end portion 94 extending around the end of the blade of knife 82 with the top of plate 92 somewhat higher than the end of the cutting blade of the knife, as illustrated in Fig. 10. Thus it will be seen that by adjusting plate 90 and rolls 88, 89, to the left, as Viewed in Figs. 10 and 12, the width of the bevel may be decreased and by adjusting the parts to the right the extent of the bevel may be increased. The adjustment is preferably such that a thin vertical edge from one-sixteenth to onethirty-second of an inch wide, as illustrated at 29 in Fig. 4, is left at the edge of the sole. In order to reduce the friction and to relieve the strain upon the knife, the upper surface of plate 92 is somewhatdepressed adjacent to the right-hand portion of the cuttingedge of the knife, as illustrated at 96 in Fig. 12.

In beveling the sole the operator presents it to the machine with the periphery of the reduced heel-seat portion inengagement with roll 88, swinging it in a counter-clockwise direction as viewed in Fig. 12 as the cut progresses. In Fig. 12, the sole, in the form in which it is presented to the machine, is indicated in outline and the line of intersection of the bevel cut with the lower surface of the sole is indicated at 98 by a dotted line. As the beveling progresses, the sole will be swung around still further in a counter-clockwise direction, the line of intersection of the bevel with the lower or tread surface of the sole continuing around substantially parallel with the periphery of the heel-seat until it reaches the other breast corner, when it will swing sharply outwardly as indicated in Fig. 4.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. That improvement in methods of manufacturing shoes which comprises dieing out the heel-seat portion of a sole which is to be attached to a shoe to a contour slightly smaller than that of the cup ofthe attaching surface of the heel which is to be attached to the shoe, then beveling the periphery thereby formed at the heel-seat portion of the sole,

and attaching the sole thus treated to the shoe.

2. That improvement in methods of manufacturin g shoes which comprises removing from the heel-seat portion of a cut sole which is to be attached to a shoe a portion having a general U-shaped form of such dimensions as to cause the heel-seat of the sole to conform in outline to the cupped attaching surface of the heel which is to be attached to the shoe,

4. That improvement in methods of manufacturingshoes which comprises removing from the heel-seatportion of a sole originall shorter than the shoe to which it is to be attached sufficient stock to cause the heelseat portion of the sole to-conform both in outline and in cross-section to the cupped attaching surface of a wood heel, whereby a minimum of stock is wasted by the heel-scat fitting operation, and attaching the sole thus fitted to a shoe.

5. Thatimprovement in methods of manu facturing shoes which consists in removing from the heel-seat portion of a sole shorter than the shoe to which it is tobe attached suflicient stock to cause the heel-seat portion of the sole to fit within the cup of the attaching surface of a heel to be attached to said shoe, then beveling the tread side of the peripheralportion of the heel-seat of the sole, and thereafter attaching the sole to said shoe.

In testimony whereof I have signed my name to this specification.

JACOB F. JONAS. 

